I just finished a 100 mile trip with a 15k trailer. I had the cruise set and was pulling a long slight incline and heard a chirp or squealing noise and the truck surged. I canceled the cruise and continued the trip without cruise and seemed to going well for a few miles. I ended up having to baby the truck up any incline or the truck would jerk and squeal. It acts like the clutch is slipping but no smell and I have never heard a slipping clutch make noise. The clutch is stock with 123000 miles. It feels like a momentary slip and the engine rpm does not climb when it chirps. Also when I pulled on the off ramp and downshifted it made a similar noise. It make the noise in 3rd 4th and 5th gear under acceleration. When I stopped I could hold my bare hand on the bottom of the tranny so it isn't getting hot. I am wondering if my clutch is going out or if I have a different issue? Anyone else have this happen?

With that many miles and towing that weight, most likely a clutch issue. You might not see the rpm go up if the slipping is happening quickly....which a chirp would suggest. My clutch was toast around 140k miles, and the clutch rivits were almost into the flywheel and pressure plate.

I use the truck as a daily driver and pull 15k to 25k gooseneck trailers about 40% of time. With my hp upgrades (edge ez and rv injectors) what clutch would be the best choice. (stock replacement/southbend single or twin disk) I don't want anything to harsh because the wife needs to be able to drive it on occasion. I am on my original stock clutch that I have put 85,000 miles on and I bought the truck with 42,000 on it.

I replaced the clutch, it was worn however not worn out. I was hauling 2 fullsize chevy pickups on my trailer and everything was going good for the first 80 miles and had to baby it the last 20. Same jerk and squeal under a heavy or light acceleration. The tranny is cool, differentals are cool front hubs are cool. The weather was about 20 degrees F. Could it be a bad bearing in the differential. I was driving in 4th when it was chirping at about 2000 rpm. It will make the noise in 3rd and 5th as well. I am thinking it is not a tranny problem because 4th would be direct through, no countershafts or side load bearings.

I know it is hard to diagnose with just a decription, however any input would be appriciated to help me find the problem before it gets bigger and more exspensive.